Form for making concrete curbs or gutters.



No. 861,686. PATENTED JULY 30, 1907. C. E. TWITT. FORM FOR MAKING-CONCRETE CURBS 0B. GUTTER'S.

APPLICATION IILED APR.18|1907.

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Q ff 5 WMZZZZ UNITED STATES PATENT OFFICE.

CHARLES TWITT, OF WEST TAMPA, FLORIDA, ASSIGNOR OF ONE-HALF TO WILLIAM J. TWITT, OF WEST'TAMPA, FLORIDA.

FOM FOR MAKING CONCRETE CURBS 'OR GUTTERS.

-Specification of Letters Patent.

Application filed April 18, 1907. Serial No. 368,933.`

Patented July 3o, 1907.

To all whom ity may concern.'

lie it known that I, Cuantas E. TwITT, a citizen of the United States, residing at West Tampa, in the county oi llillsboro and State of Florida, have invented a new andy useful Form for Making Concrete Gurbs 'and Gutters, ol' which 'the following is a spccilication.

This invention relates to molds for making concrete curbs and gutters for streets, road-ways and the like and has lor itsobject to provide a `strong, durable and tllor- 4 oughly ellcient mold of this character capable ol being readily set up for use and quickly adjusted so as to permit the formation of curbs and gutters of different widths. j

A further object of the invention is to provide a mold 1 5 'including spaced timbershaving impaling pins slidably mounted thereon andradapted .to be driven into thel ground thereby to prevent spreading of' said timbers` when tamping thecement, `concrete or other plastic material in the mold. L 2 0 I A further object is to provide a rectangular frame which rests on one of the lcmgitudinal timbersand is i spaced laterally from the opposite timber to form the curb orv coping, there being transverse bars connecting the longitudinal timbers and operatively connected with the rectangular frame lor supporting the latter in position on said timbers.

A still further object oi the invention is V.to generally i improve this class ol' devices so as to increase their utility, durability and eiliciency. Further objects und advantages '.will appear in the following description, it being understood that various vchanges inform, proportions and minor details of construction may be resorted to within the scope of the appended claims. 5 vln the accompanying drawings forming a part of this specification; Figure 1 is a perspective view o'f a mold constructed in accordance with my invention. Fig. 2 is an end view of the same. Fig. 3 is a top plan view of a portion of the mold showing the construction ofthe =0 connecting barsand locking cams.

Similar numerals of reference indicate corresponding parts in all of the figures of the drawings.

The improved mold forming the subject matter of the present invention includes spaced longitudinal timbers- 5 5 and 6 preferably of different heights and adapted to rest on the ground where the curb or gutter is to be formed. v k

Secured to the outer faces of the timbers 5 and 6 are spaced keepers or loops 7 in which are mounted for l) 'vertical movement iinpaling pins or rods 8 each having one end thereof providedowith a laterally extending` head 9 and its opposite end reduced to form a pointed terminal 10 adapted to be driven or otherwise embed-A ded in the ground thereby-to prevent spreading of the longitudinal, timbers when tamping the concrete, ce- 5i ment or other plastic material between the same.

I Combined with the timbers 5 and 6 is a substantially rectangular frame consisting of longitudinal bars 11 and v12 connected by transverse beams or strips 13 whichy rest on the timber l5 and serve to support the 60 rectangular frame in elevated position.

The longitudinal bar l2 is spaced laterally rom'the adjacent longitudinal timber 6 to form an intermediate I molding compartment 14, the lower longitudinal edge of the bar 12 being curved or deflected laterally at 15 -65 so as to give the proper curvature to the base bf the curb or coping,I indicated at 16. "t,

The longitudinal timbers 5 and 6 are spaced apart by transverse bars 17 which are disposed parallel with the upper edges of the timber 6 and bar 12 and thence 70 bent downwardly and vprovided with lateral extensions 18 which rest upon the upper edge of the longitudinal timber 5. v

VOne longitudinal edge of each connecting bar 17 is formed with apluralityfof spaced notches or recesses 19 adapted to receive-pins or studs 20 carried/bythe longitudinal timbers 5 and 6, there being cams 21 pivotally mounted onthe longitudinal timbers and; adapted to bear against'the adjacent longitudinal edges of the connecting bars I7` forforcingv the notches or 80 recesses 19 of the bars in engagement with the adjacent pins. v Y

The pins 20 are preferably provided with enlarged heads 22 which over-lapthe bars 17 so as to lock the same against vertical movement. 85

Extending vertically from the upper' longitudinal edge of the bar 12 are headed pins 23 similar in construction to the pins 20 and which are forced into engagement with the intermediate recesses in the transverse bars 17 by means of cams 24 also similar in con- 90 struction to the cams 21 thus serving to support they inner end of the frame in elevated position.

Attention is here called to the fact that the lower edges of the transverse beams `or strips 13 are bowed upwardly at 25 so as to prevent the same from coming 95 in contact with the adjacent face of the gutter 26. In some cases suitable pins or rods 27 are'extended through the transverse beams or strips 13 for engagement with the adjacent longitudinal timber 5 thereby to assist in preventing accidental displacement-of the rectangular frame. In .using the mold the longitudinal timbers 5 and 6 are spaced apart the desired distance and locked in adjusted position b rotating the cams 21 after which 'the impaling membS are driven into the ground so 105 as to prevent accidental movement of the mold. l

The cement, concrete or other plastic material is then shovclcd into' the compartment formed by the timbers 5 ando and said cement trowelcd` in' the usual manner to form thc upper surface of the gutter 26. The rectangular frame is then positioned on the timber 5 with the longitudinal bar l2 spaced later'. ily from the timber (i an-l secured in position thereon by introducing the pins 27 and manipulating the cams 24 so as to force the. bars i7 in engagement. with the headed pins 23, thc cement or concrete being subsequentlyintroduced inthe molding compartment y14 and thoroughly tamped toiorm the gutter 16. l

ln order to remove the mold it is merely necessary to detach thc 'pins 27' and move the cams to released position when the bars 17 may be removed and said frame detached fromV the' longitudinal timbers.v 1f desired,

'scription thereof is deemed unnecessary.

Having thus described the invention what is'. i

1. A mold including spaced longitudinal timbers of dif'- ferent heights and connected by transverse bars. ilional'y frame supported on the timbers and having one longitudinal edge thereof bearing against the conmwtlng bars and spaced from and disposed in horizontal alinement` with' the upper longitudinal edge of the highest timber to form an intermediate molding compartment. and

impaling members'siidabiy ,mounted on the exterior faces of the longitudinal timbers and adapted to be embedded iu the ground.

2. A mold including spaced longitudinal timbers of different heights und connected b v inclinedtransverse bars,`

and a stationary frame supported on the timbers and havis claimed a sta-v -ing one longitudinal edgethereof curved laterally and spaced from thebbighcst longitudinal timber lo form an intermediate molding compartment.

tl. A mold including spaced longitudinal timbers of dii?- fercnt, heights and connected by transverse bars` a stationary frame supported by the longitudinal timbers and having its inner wall curved laterally and spaced from the highest longitudinal timber to form an intermediate moldingl compartment. pins engaging one of the timbers, and impaling members slidably mounted on the exterior faces of the longitudinal timbers and each having one endv thereof provided vwith a pointedtermlnal adapted to engage the ground. and its 'ferent heights, transverse bars connecting opposite end formed with a driving head.

4. A mold including spaced longitudinal timbers conncctd by transverse bars having recesses formed therein` pins extending vertically from the timbers, and provided with enlarged heads over-lapping the adjacent transverse bars and cams mounted on said timbers and adapted to bear against the bars for forcing the pins 'rn engagement with the recesses.

A mold including spaced longitudinal timbers of difsaid timbers and each having one longitudinal edge thereof provided with spaced recesses` pins extending vertically from4 the upper edges of the timbers and provided'with enlarged heads over-lapping'thc adjacent transverse` baijs, and cams pivotally mo'unted on the timbers and adapted to bear against the barsl for locking the pins in engagement with the recesses. r

il. A mold including verse bars connecting spaced longitudinal timbers, trans-4 vthe timbers and each having one longitudinal edge thereof provided with terminal and intermediate recesses. a trame supported by the longitudinal timbers and having its inner longitudinal edge disposed' in contact with the transverse bars and spaced from one ot' thc longitudinal timbers yto form an intermediatemolding compartment. pins extending and longitudinal timbers. respectively. and provided with and cams carried by the timbers and frame for forcing the recessed edges ofthe bars in engagement with the adjacent pins.

ln testimony have hereto atlixed my signature in thepresence of two witnesses. CHARLES E. T\ Vll"l.

Witnesses e. 1u. Knorr;

extending through ,the frame and.

vertically, from the frame enlarged heads over-lapping the adjacent transverse bars' that l claim the foregoing as my owli, l 

